Frame for rotary machinery.



I ByKEAING L R. SCHORR.

FRAME FOR ROTARY MACHINERY.

APPLICATION FILED MAY 9. l9l1.

MSIL. I Patented Apr. 23,1918.

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FRAME FOR ROTARY MACHINEHY. APPLICATIOM'FILED MAY 9. 19|?.

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JOHN B. HEATING, OF OAKLAND, AND RGBERT SCH-OBR, OF SAN FRANCISCO, CALI- FOIRNJIA,ASSIGNORSl TO BYRON JACKSON IRON WORKS, OF WEST BERKELEY, CALIFORNIA, A CORPDRATION OF CALIFORNIA. .i

nina non ROTARY MAoHnvnnY.

Specication of Letters Patent. Pgjznijdl Api', 23, 1191@ Application filed May 9, 1917. Serial No. 167,530.

To all 'whom it may concern:

Be it known tha-t we, JOHN B. KEATING and ROBERT Sonoma, citizens of the United States, residing, respectively, at Oakland,

county of Alameda, and @an Francisco,

county of San Francisco, and State of Califorma, have invented new and useful lmproveinents in Frames for Rotary Machinery, of which the following is a specifica l' Icenter line of the nearer bearing. lit be-l tion.

l The present invention relates to improveinents in the general construction of eentrifugal or rotary pumps, compressors and the like. j The majority ot' suoli machines are very defective in regard to the arrangement for the intake ot'4 the fluid and to the accessibility to stuffing boxes and bearings.

The main object of the present invention is to provide an efficient device in a compact `construction without reducing the accessibility to the stuiing boxes.

A further object is to avoid reliance for successful operation, upon bearing sleeves located inside of the pump, which are obviously subject to great wear, and are furthermore not open to inspection.

There are two distinct types of such ina-y chines on the market, iii-st, those which have the driving shaft supported by bearings lo,- `cated on both sides of the rotor, and, second, those with a bearing sleeve close to the rotor and inside of the housing and with one or. two bearings situated on the outside, all bearings being on one side of the rotor only.

The first arrangement above referred to has the following disadvantages 1. The rotor shaft traverses the inlet-l elbow, thus causing undesirable entrance disturbances and consequently drop in etli- 2. As a liberal space between stuffing boxes and bearings is necessary to permit of repacking, such an arrangement leads to un duly great structural length.

3. The machine-work is expensive, as the bearings are seated on separate elements and not in a single self-contained frame.

4. For a reliable outlet two stufling Yboxes are required, because, otherwise, one bearing must be accommodated within the 'suction elbow, which is not reconunendable for obvious reasons.

The second arrangement above mentioned has the following disadvantages l. It is necessary to leave a fair space between the stuiiing boxes and the nearer outside bearing to permit of repacking. This, in turn, establishes a prohibitive distance between tlie center lineef the rotor and the comes, therefore, imperative to place a bearing sleeve adjacent to the'rotoi' and ahead of the stuffing box. This bearin` sleeve must be well lubricated and in perfect condition,

otherwise trouble will result from excessive sliafbdelection at the rotor-hub. The overhang of the rotor will then be actually the distance between its center line and the center line of the nearer outside bearing. 'The inside bearing 'sleeve will wear very rapidly Iif gritty or corrosive fluids, are handled.

2. 'lhe pump hasr to be partially dismantled to allow inspection of therbearingr sleeve.

sleeve, when handling gritty or corrosive fluid.-

4. To provide a rotor having an unobstructed inlet. y

5.-' To provide a rotor vwith hearings in a self-contained frame unit in order to facilitate machining and to insure accurate aline- `inent'.

6. To yprovide a rotor having only one stuiiing box and to make the stuffing box a part ot' the rotor housing in order to simplify the shopwork and obtain standardization.

7. 'l`o vprovide a rotor ywith a bearing frameV adaptable for rotors and housings therefor of diHei-ent sizes.

8.,'l`o provide a construction which will 7.5 v` The specific purposes of the present inven.

permit of making a double pump unit by keying a rotor at each end of a shaft Without adding bearings.

In the accompanying drawings, Figure 1 is a side elevation of a preferred form of the invention; F ig. :2 is a -longitudinal section thereof and Fig. 3 is a plan of the base; Fig. -1 is a cross section through the. stuffing box bearing; and Fig. 5 is a View, similar to- Fig. 2, of a modification of the invention for use with corrosive fluids.

Referring to the drawings, l indicates a rotor housing, having a cover 2, a Huid-inlet 3 and a Huid-outlet 4. The housing-neck 5 has a bore Gf to act as a stulling box, and a bearing-sleeve may, or may not, be placed at the partition 'wall 7. The stuffing box v gland 8 may form a part 'of a slidably mounted bearing 9, or it may be a separate element. A stationary bearing 10, the slidable bearing 9 and'the housing neck 5 are supported by a frame 11, which has a saddle-seat 12 and bolt-slots 13y for bolts 31 extending upwardly through Wings 14E projecting from the sides of the bearing 9 to permit of adjusting ythe bearing 9 longitudinally. Side cheeks 15 of the frame 11 carry pins 16 for eyebolts 17 which extend through front and rear wings 14 projecting from the slidable bearing 9. Nuts 18 on the ends of said bolts and engaging the-rear wings 14 adjustably hold said bearing atthe proper distance from the rotor housing.

A rotor 19 is keyed to one end of a driving shaft 20, which carries at its other end a pulley 21 or a coupling for direct connection to a motor.

The gland 8 is forced against the packing of lche stuiling box by moving the bearing 9 toward the rotor, and, by moving the same in the opposite direction, a space becomes available between the gland and the stuffingboX to enable repacking of the latter.

It will be perceived that the above arrangement permits of the smallest possible distance between the rotor and the. nearer bearing, thus reducing the overhang to a practical minimum.

In Fig 5 is 'shown a slight modication of the arrangement. It consists in keeping the stuffing box gland 8 entirely separate and distinct from the 'slidable bearing 9. Such a disposition is advisable in pumps for pumping corrosive Huid in order to avoid the possibility of said fluid reaching the slidable bearing 9.

Other modifications are possible, asis also the groupingof two pumps on one double bearingl frame such as that herein described, by fastening a second rotor where the pulley 21 is now shown and by placing a driving pulley or gear between the bearings 9 and 10.

W'e claim 1. In combination with a pump rotor and its housing and shaft, and a stuling box for the shaft, a bearing for the shaft. movable to and from the housing.

2. In combination with a pump rotor, its shaft, and its housingformed with a stuffing box. a bearing for the shaft adjacent to the stuffing box, and 4movable to and fromthe housing.

In combination with a pump rotor, its housing, shaft and stuffing box, a slidably mounted bearing for the shaft adjacent to the. stuffing box, and a gland forming a part of the slidable bearing,

el. In combination with a pump rotor, its housing, shaft, and 'stuffing box, a slidably mounted bearing for the shaft, adjacent to the stufling boing and means for moving said slidable bearing longitudinally.

5. In combination with a pump rotor, its housing, shaft, and stufling boX, a slidably mounted bearing for the shaft, a stationary bearing therefor, both bearings being located on the same side of the rotor, and a frame supporting both bearings.

JOHN B. KEATING. ROBERT SCHORR. 

